/Users/bredin/Python/tmp-cab9fff2ebeb8a45/lib/python3.4/site-packages/matplotlib-1.4.3-py3.4-macosx-10.10-x86_64.egg/matplotlib/mathtext.py:47: UserWarning: Due to a bug in pyparsing <= 2.0.0 on Python 3.x, packrat parsing has been disabled. Mathtext rendering will be much slower as a result. Install pyparsing 2.0.0 or later to improve performance.
warn("Due to a bug in pyparsing <= 2.0.0 on Python 3.x, packrat parsing "